CN213401003U - Pressure control protector - Google Patents
Pressure control protector Download PDFInfo
- Publication number
- CN213401003U CN213401003U CN202021746562.8U CN202021746562U CN213401003U CN 213401003 U CN213401003 U CN 213401003U CN 202021746562 U CN202021746562 U CN 202021746562U CN 213401003 U CN213401003 U CN 213401003U
- Authority
- CN
- China
- Prior art keywords
- pressure
- control protector
- shell
- housing
- adjusting screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The utility model relates to the technical field of voltage protection auxiliary devices, in particular to a pressure control protector, which can protect the leakage of the control protector, improve the pressure application range of the control protector, improve the reliability of the control protector, improve the self-adaptability of the control protector and reduce the operation and maintenance cost in a complex use environment; the novel pneumatic control valve comprises a housing, wherein a gas box assembly is arranged on the right half area of the bottom end of the housing, a pressure difference adjusting scale plate is arranged on the left half area of the inside of the housing, a pressure difference adjusting screw rod is arranged on the pressure difference adjusting scale plate, the top end of the pressure difference adjusting screw rod penetrates through the left half area of the top end of the housing, a threaded joint dustproof sleeve is arranged on the pressure difference adjusting screw rod, a micro-control switch and a mechanical transmission operation part are respectively arranged on the upper side and the lower side of the right half area of the inside of the housing, and a threading hole.
Description
Technical Field
The utility model relates to a technical field of voltage protection auxiliary device especially relates to a pressure control protector.
Background
The PCP series pressure control protector (hereinafter, control protector) is an electric switch controlled by system medium pressure signals, and the pressure signals need to be converted and amplified for control protection.
There are many operating points in a refrigeration air conditioning system where the pressure needs to be controlled to protect the pressure of the medium to be kept within a certain range. The controller is generally applied to various departments such as refrigeration air conditioners, industrial and agricultural production, scientific research and the like. The series of pressure control protector products provide the same functions, and also provide 'pressure controller leakage protection and overpressure protection functions', a higher applicable pressure range, a wider applicable system environment and more sensitive control compared with the conventional products without the functions of pressure controller leakage protection and overpressure protection.
The existing pressure control protector has no protection function of controller leakage caused by mechanical fatigue leakage or system medium overpressure.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem, the utility model provides a can leak to control the protector and provide the protection, promote the pressure application scope of control protector, in complicated service environment, promote the reliable degree of control protector, improve the adaptability of control protector, reduce the pressure control protector of operation maintenance cost.
The utility model discloses a pressure control protector, which comprises an outer shell, the half regional gas tank subassembly that is provided with on the right side of shell bottom, the half regional scale tablet that is provided with pressure differential regulation in the inside left side of shell, be provided with pressure differential adjusting screw on the pressure differential regulation scale tablet, pressure differential adjusting screw passes from the half regional on the left side of shell top on the top, be provided with the screwed joint dirt cup on the pressure differential adjusting screw, the regional upside on the right side of the shell inside is provided with micro-control switch and mechanical transmission operation part respectively with the downside, the half regional through wires hole that is provided with on the right side of shell bottom.
The utility model discloses a pressure control protector, threading hole department are provided with threading turriform plastic sheath.
The pressure control protector of the utility model has the microswitch of FS-ms-9-12 type.
The utility model discloses a pressure control protector, shell are the plastics material.
The utility model discloses a pressure control protector is provided with the shield on the shell.
Compared with the prior art, the beneficial effects of the utility model are that: the pressure-bearing inner corrugated pipe in the air box (double-sleeve corrugated pipe) assembly is adopted to directly sense the medium pressure, and the medium pressure is transmitted to the lever plate and then transmitted to the micro switch to act according to the lever principle, so that the control and the protection of the equipment are realized. When the pressure felt by the corrugated pipe in the pressure bearing does not reach a set value, a thrust force smaller than the spring force is generated, the position, contacted with the microswitch, on the lever plate is always in a state of pressing a reed of the microswitch, the pressed limit switch is always connected, and the control loop normally works. When the pressure sensed by the pressure-bearing inner corrugated pipe reaches a set value, a thrust force greater than the spring force is generated, the lever plate immediately pushes the spring, the contact position of the lever plate and the micro switch correspondingly loosens a reed of the micro switch, the micro switch acts, and a control loop is disconnected, so that the compressor is protected; when the pressure falls back to be lower than the temperature set value, the force generated by the medium in the air box component is smaller than the spring force, the spring pushes the lever plate, the reed of the microswitch is gradually pressed at the position, closest to the microswitch, on the lever plate, and when the pressure falls back to the set pressure difference, the microswitch acts to control the circuit to be switched on, so that the reset control effect is realized on the compressor. The inner corrugated pipe leaks due to mechanical fatigue or overpressure (specified limit pressure) of a system medium in a double-sleeve type corrugated pipe assembly, the pressure medium is in a tiny crack (hole) at the initial stage of the leakage crack (hole), the medium is gasified through the tiny crack (hole) under the action of pressure, the viscosity of the medium is reduced, the pressure rapidly acts on the acting surface of the outer-layer protection corrugated pipe, and meanwhile, the acting area of the outer-layer protection corrugated pipe is several times of the acting area of the inner-layer pressure-bearing corrugated pipe. When the pressure of the medium in the outer-layer corrugated pipe is a fraction of the set value, the outer-layer protection corrugated pipe is forced to move upwards to push the lever plate, so that the switch is driven to act, and a switch signal of '0' or '1' is output. Under the condition that the system has no other pressure detection (analog quantity) system, the pressure of the medium system is reduced after the system is stopped, the system is restarted, but the system can be stopped only when the system reaches a few fractions of the original set value, and the system can not be normally started, so that the medium in the system is prevented from leaking or the medium loss is reduced. When other pressure detection (analog quantity) systems exist in the system, a pressure signal closed-loop system can be formed, and an alarm is given out or the unit is forced to stop when leakage or overpressure leakage occurs, so that the loss is reduced, and the operation safety of the system is improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of a threaded joint boot seal;
FIG. 3 is a schematic view of the construction of the dust cap;
FIG. 4 is a schematic structural view of the housing;
in the drawings, the reference numbers: 1. a housing; 2. a gas tank assembly; 3. the pressure difference adjusts the scale plate; 4. a pressure difference adjusting screw; 5. a screwed joint dust-proof sleeve; 6. a micro-control switch; 7. a mechanical transmission operation unit; 8. threading tower-shaped plastic sheaths; 9. and a dust cover.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in fig. 1 to 4, the pressure control protector of the present invention comprises a shell 1, a gas tank assembly 2 is arranged in the right half area of the bottom end of the shell 1, a pressure difference adjusting scale plate 3 is arranged in the left half area of the inside of the shell 1, a pressure difference adjusting screw 4 is arranged on the pressure difference adjusting scale plate 3, the top end of the pressure difference adjusting screw 4 passes through the left half area of the top end of the shell 1, a screwed joint dust-proof sleeve 5 is arranged on the pressure difference adjusting screw 4, a micro-control switch 6 and a mechanical transmission operation component 7 are respectively arranged on the upper side and the lower side of the right half area of the inside of the shell 1, and a threading hole is arranged in the right half area; the pressure-bearing inner corrugated pipe in the air box (double-sleeve corrugated pipe) assembly is adopted to directly sense the medium pressure, and the medium pressure is transmitted to the lever plate and then transmitted to the micro switch to act according to the lever principle, so that the control and the protection of the equipment are realized. When the pressure felt by the corrugated pipe in the pressure bearing does not reach a set value, a thrust force smaller than the spring force is generated, the position, contacted with the microswitch, on the lever plate is always in a state of pressing a reed of the microswitch, the pressed limit switch is always connected, and the control loop normally works. When the pressure sensed by the pressure-bearing inner corrugated pipe reaches a set value, a thrust force greater than the spring force is generated, the lever plate immediately pushes the spring, the contact position of the lever plate and the micro switch correspondingly loosens a reed of the micro switch, the micro switch acts, and a control loop is disconnected, so that the compressor is protected; when the pressure falls back to be lower than the temperature set value, the force generated by the medium in the air box component is smaller than the spring force, the spring pushes the lever plate, the reed of the microswitch is gradually pressed at the position, closest to the microswitch, on the lever plate, and when the pressure falls back to the set pressure difference, the microswitch acts to control the circuit to be switched on, so that the reset control effect is realized on the compressor. The inner corrugated pipe leaks due to mechanical fatigue or overpressure (specified limit pressure) of a system medium in a double-sleeve type corrugated pipe assembly, the pressure medium is in a tiny crack (hole) at the initial stage of the leakage crack (hole), the medium is gasified through the tiny crack (hole) under the action of pressure, the viscosity of the medium is reduced, the pressure rapidly acts on the acting surface of the outer-layer protection corrugated pipe, and meanwhile, the acting area of the outer-layer protection corrugated pipe is several times of the acting area of the inner-layer pressure-bearing corrugated pipe. When the pressure of the medium in the outer-layer corrugated pipe is a fraction of the set value, the outer-layer protection corrugated pipe is forced to move upwards to push the lever plate, so that the switch is driven to act, and a switch signal of '0' or '1' is output. Under the condition that the system has no other pressure detection (analog quantity) system, the pressure of the medium system is reduced after the system is stopped, the system is restarted, but the system can be stopped only when the system reaches a few fractions of the original set value, and the system can not be normally started, so that the medium in the system is prevented from leaking or the medium loss is reduced. When other pressure detection (analog quantity) systems exist in the system, a pressure signal closed-loop system can be formed, and an alarm is given out or the unit is forced to stop when leakage or overpressure leakage occurs, so that the loss is reduced, and the operation safety of the system is improved.
In the pressure control protector of the utility model, a threading tower-shaped plastic sheath 8 is arranged at the threading hole; the threading tower-shaped plastic sheath can protect the wire harness, and the use reliability is improved.
In the pressure control protector of the utility model, the micro switch is FS-ms-9-12 type; the FS-ms-9-12 type microswitch has good and stable performance.
In the pressure control protector of the utility model, the shell 1 is made of plastic material; the plastic shell can reduce weight and improve practicability.
The pressure control protector of the utility model is characterized in that the shell 1 is provided with a dust cover 9; the dustproof cover can play a dustproof role in each part, and the use reliability is improved.
The utility model discloses a pressure control protector, it is at the during operation, and bellows direct impression medium pressure in adopting pressure-bearing in the gas tank (the bellows of covering again) subassembly, through lever principle, transmits for the lever plate, transmits the micro-gap switch action again to play control and protection to equipment. When the pressure felt by the corrugated pipe in the pressure bearing does not reach a set value, a thrust force smaller than the spring force is generated, the position, contacted with the microswitch, on the lever plate is always in a state of pressing a reed of the microswitch, the pressed limit switch is always connected, and the control loop normally works. When the pressure sensed by the pressure-bearing inner corrugated pipe reaches a set value, a thrust force greater than the spring force is generated, the lever plate immediately pushes the spring, the contact position of the lever plate and the micro switch correspondingly loosens a reed of the micro switch, the micro switch acts, and a control loop is disconnected, so that the compressor is protected; when the pressure falls back to be lower than the temperature set value, the force generated by the medium in the air box component is smaller than the spring force, the spring pushes the lever plate, the reed of the microswitch is gradually pressed at the position, closest to the microswitch, on the lever plate, and when the pressure falls back to the set pressure difference, the microswitch acts to control the circuit to be switched on, so that the reset control effect is realized on the compressor. The inner corrugated pipe leaks due to mechanical fatigue or overpressure (specified limit pressure) of a system medium in a double-sleeve type corrugated pipe assembly, the pressure medium is in a tiny crack (hole) at the initial stage of the leakage crack (hole), the medium is gasified through the tiny crack (hole) under the action of pressure, the viscosity of the medium is reduced, the pressure rapidly acts on the acting surface of the outer-layer protection corrugated pipe, and meanwhile, the acting area of the outer-layer protection corrugated pipe is several times of the acting area of the inner-layer pressure-bearing corrugated pipe. When the pressure of the medium in the outer-layer corrugated pipe is a fraction of the set value, the outer-layer protection corrugated pipe is forced to move upwards to push the lever plate, so that the switch is driven to act, and a switch signal of '0' or '1' is output. Under the condition that the system has no other pressure detection (analog quantity) system, the pressure of the medium system is reduced after the system is stopped, the system is restarted, but the system can be stopped only when the system reaches a few fractions of the original set value, and the system can not be normally started, so that the medium in the system is prevented from leaking or the medium loss is reduced. When other pressure detection (analog quantity) systems exist in the system, a pressure signal closed-loop system can be formed, and an alarm is sent out or a unit is forced to stop when leakage or overpressure leakage occurs, so that the loss is reduced, and the operation safety of the system is improved; the threading tower-shaped plastic sheath can protect the wire harness, so that the use reliability is improved; the FS-ms-9-12 type microswitch has good and stable performance; the plastic shell can reduce the weight and improve the practicability; the dustproof cover can play a dustproof role in each part, and the use reliability is improved.
The utility model discloses a pressure control protector, above the mounting means, the connected mode or the mode that sets up of all parts are common mechanical system to the concrete structure, model and the coefficient index of all its parts are its from taking the technique, as long as can reach all can implementing of its beneficial effect, so do not add at much and give unnecessary detail.
In the case where no description is given to the contrary, the directional terms included in the terms "up, down, left, right, front, rear, inside, outside, vertical, horizontal" and the like only represent the direction of the term in the normal use state, or be a trivial term understood by those skilled in the art, and should not be considered as limiting the term, at the same time, the numerical terms "first," "second," and "third," etc. do not denote any particular quantity or order, but rather are used to distinguish one from another, furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements, but also includes other elements not expressly listed or inherent to such process, method, article, or apparatus.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The utility model provides a pressure control protector, a serial communication port, including shell (1), shell (1) bottom right half regional gas tank subassembly (2) that is provided with, shell (1) inside left half regional is provided with pressure differential regulation scale tablet (3), be provided with pressure differential adjusting screw (4) on the pressure differential regulation scale tablet (3), pressure differential adjusting screw (4) top is passed from shell (1) top left half regional, be provided with screwed joint dirt proof boot (5) on pressure differential adjusting screw (4), shell (1) inside right half regional upside and downside are provided with micro-control switch (6) and mechanical transmission arithmetic unit (7) respectively, shell (1) bottom right half regional is provided with the through wires hole.
2. A pressure control protector according to claim 1 characterised in that a threaded tower-shaped plastic sheath (8) is provided at the threaded aperture.
3. A pressure control protector according to claim 2 in which the microswitch is of the FS-ms-9-12 type.
4. A pressure control protector according to claim 3 characterised in that the housing (1) is of plastics material.
5. A pressure control protector according to claim 4 characterised in that the housing (1) is provided with a dust cap (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021746562.8U CN213401003U (en) | 2020-08-20 | 2020-08-20 | Pressure control protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021746562.8U CN213401003U (en) | 2020-08-20 | 2020-08-20 | Pressure control protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213401003U true CN213401003U (en) | 2021-06-08 |
Family
ID=76207510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021746562.8U Active CN213401003U (en) | 2020-08-20 | 2020-08-20 | Pressure control protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213401003U (en) |
-
2020
- 2020-08-20 CN CN202021746562.8U patent/CN213401003U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0014452B1 (en) | Pressure transducer | |
| JP7444987B2 (en) | a pressure relief device and a battery housing with the pressure relief device; | |
| GB2511803A (en) | Pneumatic sensing apparatus | |
| CN213401003U (en) | Pressure control protector | |
| CN1754090B (en) | Gauge pressure sensor for hazardous applications | |
| CN110630905B (en) | Pressure element | |
| CN104062064A (en) | Apparatus Fastening Pressure Sensor On Carrier Plate Containg Pressure Channel | |
| CN105609368A (en) | Gas density relay with gas density level indicator | |
| US3027916A (en) | Safety relief valve | |
| CN112377818A (en) | Gas leakage monitoring device based on intelligent gas and use method thereof | |
| CN201107137Y (en) | Hydraulic type force measuring apparatus | |
| US3938549A (en) | Tattletale annuciator and shut-down control for compressors or like equipment | |
| CN218772644U (en) | Pressure control protector with leakage and overpressure protection functions | |
| CN207947220U (en) | A kind of high antivibration gas density relay | |
| CN205177706U (en) | Take gas density level -indicator's gas density relay | |
| CN112985654B (en) | Pressure sensor and method for assembling the same | |
| CN204696034U (en) | Pressure controller | |
| US3553403A (en) | Airflow safety switch | |
| US4616670A (en) | High-low pressure pilot | |
| CN216288179U (en) | Pressure switch | |
| CN215911364U (en) | FP74E pressure difference controller | |
| CN108305814B (en) | Pressure signal device capable of bearing ultrahigh overload for long time | |
| CN210722873U (en) | P45 high durability pressure controller | |
| CN221091240U (en) | Flow display control device for aircraft oxygen system | |
| JPH089623Y2 (en) | Pressure transducer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |